Are these transistors interchangeable?

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  • Rambo
    Member
    • Nov 2013
    • 15
    • Pakistan
    #1

    Are these transistors interchangeable?

    Im trying to fix a no power Lenovo edge 520 laptop. There are two power switching transistors 4835D, out of which one seems to be out of function. No reading by the multimeter when tested with ground. I have a spare board that has the 4407 transistors on it, and I was wondering if I could change the 4835D with the 4407?

    Spec sheets are here: http://www.alldatasheet.com/view.jsp?Searchword=4835D

    http://alltransistors.com/mosfet/tra...ansistor=20412

    Last edited by Rambo; 09-08-2015, 05:43 AM. Reason: Fix not working link
    Tags: None
    • SteveNielsen
      Retired Tech
      • Jun 2012
      • 2327
      • USA
      #2
      Re: Are these transistors interchangeable?

      The picture isn't really helpful for IDing parts. If you can use higher resolution, better focus and no flash and specify exactly what it is and what you want us to see.

      The 1st link doesn't show any specs for a 5835, the second doesn't either. I can't find any specs matching 5835 to any MOSFET P-channel that the 4407 is. The closest I see there is a NTMS5835NL, which is an N-chanel MOSFET and is NOT interchangeable with the 4407.

        Comment

        • dspok
          Badcaps Veteran
          • Jan 2014
          • 553
          • Nepal
          #3
          Re: Are these transistors interchangeable?

          Both model you mentioned are p channel MOSFET. So it will work.

            Comment

            • SteveNielsen
              Retired Tech
              • Jun 2012
              • 2327
              • USA
              #4
              Re: Are these transistors interchangeable?

              Originally posted by dspok
              Both model you mentioned are p channel MOSFET. So it will work.
              May I ask how you deduce that? I'm not challenging, just want to learn myself.

                Comment

                • Rambo
                  Member
                  • Nov 2013
                  • 15
                  • Pakistan
                  #5
                  Re: Are these transistors interchangeable?

                  Originally posted by SteveNielsen
                  The picture isn't really helpful for IDing parts. If you can use higher resolution, better focus and no flash and specify exactly what it is and what you want us to see.

                  The 1st link doesn't show any specs for a 5835, the second doesn't either. I can't find any specs matching 5835 to any MOSFET P-channel that the 4407 is. The closest I see there is a NTMS5835NL, which is an N-chanel MOSFET and is NOT interchangeable with the 4407.
                  Its a 4835d 30v P channel, while the other is a 4407 30v P channel too. I was simply asking if they are compatible, considering both specsheets pretty much read the same specs.

                  http://www.alldatasheet.com/view.jsp?Searchword=4835D
                  Last edited by Rambo; 09-08-2015, 05:43 AM.

                    Comment

                    • Rambo
                      Member
                      • Nov 2013
                      • 15
                      • Pakistan
                      #6
                      Re: Are these transistors interchangeable?

                      Originally posted by dspok
                      Both model you mentioned are p channel MOSFET. So it will work.
                      Thought it would be better I asked. Thankyou.

                        Comment

                        • SteveNielsen
                          Retired Tech
                          • Jun 2012
                          • 2327
                          • USA
                          #7
                          Re: Are these transistors interchangeable?

                          Originally posted by Rambo
                          Its a 4835d 30v P channel, while the other is a 4407 30v P channel too. I was simply asking if they are compatible, considering both specsheets pretty much read the same specs.

                          http://www.alldatasheet.com/view.jsp?Searchword=4835D
                          I see. I couldn't get to that from the 1st link, I'm sorry.

                          Edit: Even worse, I'm starting to mix up numbers in my head now. Getting older really sucks in some ways.
                          Last edited by SteveNielsen; 09-08-2015, 07:22 AM.

                            Comment

                            • dspok
                              Badcaps Veteran
                              • Jan 2014
                              • 553
                              • Nepal
                              #8
                              Re: Are these transistors interchangeable?

                              Originally posted by SteveNielsen
                              May I ask how you deduce that? I'm not challenging, just want to learn myself.
                              Google datasheets for the said part number.

                                Comment

                                • Richardadmi
                                  New Member
                                  • Sep 2015
                                  • 1
                                  • USA
                                  #9
                                  Re: Are these transistors interchangeable?

                                  A better choice would be a 2SA1124

                                  get the data sheet through Digi-key and compare.

                                  ft is higher but the rest is very similar

                                  -------------------------------------------
                                  Latest Lenovo Laptop price

                                    Comment

                                    • fzabkar
                                      Badcaps Veteran
                                      • Mar 2009
                                      • 772
                                      • Australia
                                      #10
                                      Re: Are these transistors interchangeable?

                                      Originally posted by Richardadmi
                                      A better choice would be a 2SA1124
                                      Eh?

                                        Comment

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